Home / 156,963.90-235,445.85-90,608.70

Finding the Fourth Proportional to 156,963.90, 235,445.85 and 90,608.70

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Solution

The fourth proportional to 156,963.90, 235,445.85 and 90,608.70 is: 135,913.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,963.90 : 235,445.85 = 90,608.70 : x
  2. Step 2: Convert to fraction form
    156,963.90/235,445.85 = 90,608.70/x
  3. Step 3: Cross multiply
    156,963.90x = 235,445.85 × 90,608.70
  4. Step 4: Simplify right side
    156,963.90x = 21,333,442,388.90
  5. Step 5: Solve for x
    x = 21,333,442,388.90/156,963.90
  6. Step 6: Final answer
    x = 135,913.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.